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Loud Aggressive Sound. Add the sound of excellence to your S197 GT or Shelby GT500 Mustang with a Borla 3" Cat-Back exhaust. This Borla 3" Cat-Back will uncork your V8's restrictive factory exhaust for an increase in power and an aggressive muscle car sound that everyone will love.

Street or Off-road Use. The Borla Cat-Back Exhaust X-Pipe bolts up directly behind the factory catalytic converters making your Mustang 100% smog-legal. Or it can be installed with Borla's XR-1 Long Tube Headers, deleting the factory cats for even more power and making it perfect for off-road use.

Application. This Borla 3" Cat-Back Exhaust System with included X-Pipe has a versatile design that allows it to fit 2011-2014 GT and 2011-2012 GT500 Mustangs equipped with either the factory manifolds or aftermarket shorty headers installed. It can also be installed on 2011-2014 GT or 2011-2012 GT500 Mustangs with a set of Borlas XR-1 Long Tube Headers by deleting the catalytic converters.

Technical notes. By removing the catalytic converters this exhaust is no longer legal for use on pollution controlled motor vehicles; and will be intended for off road use only.

Most Helpful Reviews

5/5

Amazing tone when you want it...

I've had this exhaust for about a year now and I have to say it's definitely my favorite mod. It's loud... really loud! At cold start, you might have some angry neighbors, but it mellows out after about ...
30 seconds. It has a deep rumble with an almost exotic tone when your accelerating. It sounds so nice between 2000 and 3000 rpms. And at WOT it roars! Deep, loud, rumbling in your seat fun... And the best part, it's only a notch or two above stock when you're in 6th on the highway. I'd definitely reccomend this or the S-Type Borla exhaust to any late model mustang owner. Amazing quality, craftsmanship, and durability.

Meanest Growl you could imagine

Borla has outdone themselves once again. The sounds is amazingly mean and throaty. So much better than any x pype, roush, or flowmaster you can buy. I also like the 3" portion and true x pipe, which gives ...
you very little back pressure so your 5.0 can shine. I would recommend this exhaust to anyone that wants great sound, good power upgrade, and amazing back pressure drops.

I plan on running a long tube header application in the future, would this catback pair up well with Stainless Works Long Tube headers? If not why?

Anonymous

This cat back exhaust system may work with the Stainless Works long tube headers but it may need custom modification for it to work. If you would like to run that setup, please consult with a trusted exhaust shop to see if it would work. On the other hand, the best fit long tube headers for this cat back would be the Borla XR-1 long tube headers item #29022 as they were made to work in unison with each other.

Will this fit aftermarket shorty headers? Of course this is assuming I'm reusing the stock cats.

Benson5oh

The Borla 3 in. Cat-Back Exhaust (11-14 GT, 11-12 GT500) will be able to be equipped with either the stock manifolds or aftermarket shorty headers installed as found in the Application section of the item page.

I've had this exhaust for about a year now and I have to say it's definitely my favorite mod. It's loud... really loud! At cold start, you might have some angry neighbors, but it mellows out after about 30 seconds. It has a deep rumble with an almost exotic tone when your accelerating. It sounds so nice between 2000 and 3000 rpms. And at WOT it roars! Deep, loud, rumbling in your seat fun... And the best part, it's only a notch or two above stock when you're in 6th on the highway. I'd definitely reccomend this or the S-Type Borla exhaust to any late model mustang owner. Amazing quality, craftsmanship, and durability.

Borla has outdone themselves once again. The sounds is amazingly mean and throaty. So much better than any x pype, roush, or flowmaster you can buy. I also like the 3" portion and true x pipe, which gives you very little back pressure so your 5.0 can shine. I would recommend this exhaust to anyone that wants great sound, good power upgrade, and amazing back pressure drops.

Well, I researched what exhaust to buy for several months to be able to make the right decision, because I see it more of an investment because of the expense. Based on quality and finish I had two brands to pick from, Bassani and Borla. I had known that both were famous for quality of workmanship. I had heard Borla before but not on a Mustang. I had never heard Bassani before on anything so I decided to wait and finally about a week ago I saw a very well made video on youtube and the guy put Bassani and a Borla on his Mustang. Copy and paste if you are interested to see it (Bassani Axle-Backs vs. Borla ATAK Axle-Backs). The quality of sound of the video was good enough and he used the same protocol for both (apples to apples). I am not saying that Bassani is bad so please don't misinterpret me. I think that both sounded great but I found the Borla to be more aggressive and with a deeper sweeter sound more to my taste and boy I tell you I have no regrets. Quality of materials is really first class and it sounds amazing, super loud when you need it to be and perfect when you don't. Heads up, I am already wasting a lot more gas just running lower gears constantly just to hear the awesome deep sweet rumble. I paid a shop to do the install and the passenger nozzle is touching the rear valance so I am going to take it back to get it straighten out but that was the installer's fault. I also have to say that this is the first time I ordered from American Muscle and I am extremely impressed with the service and super fast free delivery, I couldn't believe it. I ordered an MGW shifter from another company a month earlier and I got it a day after I got the exhaust. An hour after I ordered the exhaust I got an email saying the item had been shipped and two days later I got it. Amazing for such a heavy item. Thanks American Muscle, you surely have a new satisfied customer here.

If you've read anything about the atak system on the forums, you would swear that hearing them would make your ears bleed. That is really not the case. They are definitely louder than stock, but not offensively so. I really wish they were louder, but I'm satisfied with how much sound they produce. They idle at about the same volume as stock and don't exceed stock decibels too much until about 2.5k. They scream pretty well after that, but they aren't gonna set off any car alarms. The tone is incredible. It's a nice growl with a great burbly decel. American muscle was very timely with shipping. Ordered it on a Sunday and it was here by Friday. Unfortunately, the passeng er side muffler had a ding about 4 inches back from the tip. The tips don't stick out far enough for it to be noticeable, however. Still, this is the most expensive catback offered, so that was kind of disappointing. install was very straightforward, with only a couple of headaches. Took about 3 hours on a lift. All in all a great product, but a touch over priced. If I had to do it again, I'd probably go with something that deleted the cats and made a bit more sound

I have been searching for exhaust systems for months now and could not decide which one to go with. After making up my mind I decided to go with the Borla Catbacks and I could not be more satisfied with my purchase. The sound is amazing and loud, and always puts a smile to my face when I turn my car on. Yes, it's a little pricey but trust me, it's worth every penny.

Put this on my 2012 Super Snake with 7/8 headers and holy cow! When you jump on the gas this thing screams! It quiet enough in the cabin but if you are driving behind it you might as well get new ears. This is a must if you have a GT500

Borla 3 in. Cat-Back Exhaust - Black Tips (11-14 GT; 11-12 GT500)

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Word on The Street

I'm pretty certain this is the best shopping experience I've ever had. I found what I wanted on AmericanMuscle.com, then did some price shopping and ended up coming back and order from them because they had the lowest price AND free shipping too. I honestly look forward to spending more money with American Muscle. They have customer submitted photos in addition to their great product photography as well as installation guides from users and manufacturers. Their videos are honest and incredibly useful. I can't think of anything else I'd like to see from them.